I haven't been there in several years, so I'm not sure of all the businesses there these days, but if memory serves, the park is on the northeast corner of the intesection; there was a Roy Rogers (IIRC, those are now all Hardees') on the southeast corner, a small gas station adjacent to a liquor store and a KFC on the southwest corner, and small shops on the northwest corner. (I lived a few blocks up Eastern Ave. from that intersection).
In any event, a quick getaway would work; the Beltway is about three miles north; going through downtown Silver Spring, where one could continue up Georgia Ave., northeastward on Colesville Rd, or either east or west on MD 410 (E-W Highway).